UVB Sunbed

Hey guys I’m new here and was wondering if anyone has bought one of these that has uvb tubes and not your standard uva sun beds. I’ve had psoriasis now for 25 years, it started when I was 10 so I’ve had it way more than I’ve not! I’ve had countless ointments, creams, tars etc which I had no luck with. The only thing that helps mine is the uvb therapy at the hospital. I’ve had this once a year for 15 years. I am a mother of 3 and of course going to hospital 3 times per week takes its toll as you can imagine. Any info would be greatly appreciated! Thank you.